texinfo: @tie

Breaks

@sp

@w

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15.6 '@tie{}': Inserting an Unbreakable Space
=============================================

The '@tie{}' command produces a normal interword space at which a line
break may not occur.  Always write it with following (empty) braces, as
usual for commands used within a paragraph.  Here's an example:

     @TeX{} was written by Donald E.@tie{}Knuth.

produces:

     TeX was written by Donald E. Knuth.

  There are two important differences between '@tie{}' and '@w{ }':

   * The space produced by '@tie{}' will stretch and shrink slightly
     along with the normal interword spaces in the paragraph; the space
     produced by '@w{ }' will not vary.

   * '@tie{}' allows hyphenation of the surrounding words, while '@w{ }'
     inhibits hyphenation of those words (for TeXnical reasons, namely
     that it produces an '\hbox').